2 * This is the original minix inode layout on disk.
3 * Note the 8-bit gid and atime and ctime.
16 * The new minix inode has all the time entries, as well as
17 * long block numbers and a third indirect block (7+1+1+1
18 * instead of 7+1+1). Also, some previously 8-bit values are
19 * now 16-bit. The inode is now 64 bytes instead of 32.
34 * minix super-block data on disk
36 struct minix_super_block {
39 uint16_t s_imap_blocks;
40 uint16_t s_zmap_blocks;
41 uint16_t s_firstdatazone;
42 uint16_t s_log_zone_size;
49 struct minix_dir_entry {
54 /* Believe it or not, but mount.h has this one #defined */
59 BITS_PER_BLOCK = BLOCK_SIZE << 3,
64 MINIX1_SUPER_MAGIC = 0x137F, /* original minix fs */
65 MINIX1_SUPER_MAGIC2 = 0x138F, /* minix fs, 30 char names */
66 MINIX2_SUPER_MAGIC = 0x2468, /* minix V2 fs */
67 MINIX2_SUPER_MAGIC2 = 0x2478, /* minix V2 fs, 30 char names */
68 MINIX_VALID_FS = 0x0001, /* clean fs */
69 MINIX_ERROR_FS = 0x0002, /* fs has errors */
71 INODE_SIZE1 = sizeof(struct minix1_inode),
72 INODE_SIZE2 = sizeof(struct minix2_inode),
73 MINIX1_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix1_inode),
74 MINIX2_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix2_inode),